- Making Male Circumcision A Top-Tier HIV Prevention Strategy With $18.5 Million Grant
- Helping Nursing Home Staff Become Comfortable With Residents’ Sexual Expression
- Online, Hearing Advice to Contraceptions Full tilt GP, Royal Australian College Vrachey General practical persons
- Safe Sex Campaign Out And About In Portsmouth, UK
- Supporters Of Calif Initiative ‘Dishonest’ By Promoting Measure As ‘Just Parental Notification,’ Opinion Piece Says
- International Team Reveals First Prognosticator Of Survival In Aggressive Cancer
- New Concepts In Contraception
- Fighters In Liberia More Probably to Had a Mental Disturbances of Health After Opening In Sexual Violence
- Teacher-Student Relationships Key To Learning Health & Sex Education
- Traditional radiation planning methods
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Making Male Circumcision A Top-Tier HIV Prevention Strategy With $18.5 Million Grant
November 25th, 2008
Male cutting gets the recognition as fundamental practical person to limit spreading HIV through under-Africa Saharan. Three final studies were conducted in country African, including Noding, has shown that formation absolutely reduces the chances a men receptions HIV from infected women. Call now must transform this clinical knowledge on public health of the strategies, which can save the millions of the lifes.
Household Health International (FHI), Bill & Base Winch Melinda, and Government Noding unites to address this call. FHI has GOT five year, millionth grant US$18.5 from Basis Winch to install the Male Consortium of the Cutting (MCC), partnership with University Illinois in Chicago (UIC) and EngenderHealth.
The Consortium will work within the framework of National Management for Voluntary Male Cutting in Noding and with radius of the action supplier public healths to perfect and increase the voluntary male facilities of the cutting in Noding. These measures will be through National TASK FORCE in Male Cutting in Ministry of the PUBLIC HEALTH and Sanitations and, in Provinces Nyanza, through offices of the provincial directors of the public health and sanitations and medical services.
The State initiative is also supported USA. The Plan to Emergency of the President for Relief of the FACILITIES (PEPFAR) and the other partner.
The Consortium, on consultations with Government Noding, will conduct research and preparation to activity to define safest and the most efficient ways to provide the voluntary male facilities of the cutting. This will also help Noding to provide exhausting and available prevention HIV in area with the most low level of the male cutting and the most upper spreading HIV.
The Consortium is focused in Provinces Nyanza originally, but influence will be national, reports Dr. Mores Loolpapit Household Health International, which - a senior manager of the Male Consortium of the Cutting in Noding. “This initiative allows the Government a Noding the national strategic plan to reduce the issue HIV in Noding,” he adds. “This will generate the knowledge, which government can use to realize its national control for voluntary male cutting in Noding and probably affect the voluntary adult male programs of the cutting worldwide.”
The Clinical trial of adult male cutting were conducted in Noding and Uganda shown that medical workable cutting reduces the risk to gain HIV aproximately half. Similar test in South Africa shown 61 percents of the reduction in infections HIV amongst cut the mans.
“This central study has conducted the competent authorities in east and south Africa to enter support for broadly wide-spread ensuring the services of the cutting,” reports the professor Robert Bailey, in School UIC PUBLIC HEALTHS. Bailey Was a leaden researcher of the analysis Kenyan and - a leaden researcher for Male Consortium of the Cutting.
After viewing result three tests of the cutting, the experts were convened World Organization of Health (WHO) and Joint Program United Nation in HIV/FACILITY (UNAIDS) solved that acknowledgement that male cutting provides partial protection against infection HIV was forced. They recommended that safe and voluntary male cutting was considered by part exhausting strategies of the prevention HIV. The Partners of the Consortium worked closely with WHICH to check that purposes of the Consortium support WHO/recommendations UNAIDS, and that activity complements the public measures of global health to reduce the number new infection HIV enlarging amount to cut the mans.
The Purposes of the Consortium of the Male Cutting - on:
Support the Government a Noding and other local partner in development and execution to national male strategy of the cutting.
Increase male cutting research and preparing the centre in Kisumu to prepare the supplier, build the possibility of the facilities of health and check the clinical results.
Identify and address any misunderstandings about male cutting for prevention HIV.
The Study of the Behaviour to identify safest, the most efficient ways to provide voluntary male cutting as a part exhausting package of the services of the prevention HIV.
“Expanding male facilities of the cutting is a big possibility to occupy the mans to take greater responsibility for prevention HIV,” reports Feddis Mumba, Country Director, EngenderHealth-Kenya. “Reaching populations that usually has an no access to service of health, we can increase the possibility to train the man about change the behaviour and importance collective sexual decision making, which must perfect the results of health both for mans and womans.”
Helping Nursing Home Staff Become Comfortable With Residents’ Sexual Expression
November 19th, 2008
The Signs “do not disturb” - not simply for newlyweds more.
They - also way to give the resident of the nursing home certain secrecy for sexual expression, according to getting old expert of the University Kansas State.
” Law You can not always lock the room, but You may offer the resident certain secrecy,” said Doll Gayle, who direct Centre K-State’s in Diligence.
She has said the floor-quotient to pose of the rooms problem for resident of the nursing home, which want to concern with sexual activity, or only or with partner. That is why two from researchers of the centre look at way to do the personnel of the nursing home more comfortable, placing sexual need resident.
The Doll has said that since personnel of the nursing home does not get any formation in this area, they tend to or ignore or convict these it is necessary.
“We simply want that people began to speak of these questions,” she has said. “As soon as You will begin to speak of this with personnel of the nursing home, all have a tale.”
Majka Jankowiak And Laci Cornelison, research assistents in the Centre on Aging, under study relations of the personnel of the nursing home about sexuality in three Kansas nursing homes. The Study was presented in October in American Assotiation of the Houses and was Served for conference of the Diligence.
The Researchers examined the personnel before and after workshop, which they have presented. The Studies, as well as anecdotal feedback from participant, shown chosenned change to relations.
“They have really felt this was a subject on which they must be trained,” Jankowiak said. “Part this - that American society not supportive more old people and sex. This was a taboo, and this - an even greater taboo in, nursing home. After presentation, the participants felt the more certain talk about this and deal with sexual expression resident.”
These changeable relations were translated on positive experience for one concrete pair(vapour)s, Cornelison has said. ZHenataya pair moved in room of the nursing home with two beds of the hospital. One spouse must raise the leg, but this was found on the same side as bed of the partner, which was made this it is difficult for them to conduct the hands. Some employees did not see importance, allowing intimacy pair(vapour)s and reported that problem could is not installed.
“But anyone, which was in our presentation all to move furniture,” Cornelison has said.
The Researchers have said that sexuality and residents of the nursing home brings up the questions for exact to acknowledge and placing sexual expression. HIV And other sexual sent disease can be an enxiety for generation, which can not have same privity that younger people do.
Also, adult children can have an enxiety about their parental safety or as new attitude will influence upon family or their inheritance. The Researchers develop the material to help the member to families of the deal with these questions.
The Doll “That they awe is an usage or that role played parent has said.
Besides, Alzheimer’s and insanity raises the questions about abilities to agree, and these condition also can spur the sexual behaviour, which unbeseeming.
The Doll “Even though we defend for rights resident, there is belongings, which unbeseeming,” has said. “But personnel must be a capable handle this without feeling resident upset. The Unbeseeming behaviour can simply come from people, requiring relationship, without fall not sexual that.”
The Doll reported the hope of the researchers to see the federal managing principles designed to help whole nursing home to deal with sexuality in positive ways, particularly as baby boomers get old and bring their relations about sex with them in nursing home.
The Doll “Nursing homes is second most adjusting industry beside nucleus power, and while these rates do not address sexuality,” has said.
Filed under Health News | Comment (0)Online, Hearing Advice to Contraceptions Full tilt GP, Royal Australian College Vrachey General practical persons
October 10th, 2008
The Royal Australian College Vrachey General practical persons (RACGP), has started new online hearing activity designed to support the general practical persons and the other participants of the group practical persons in increasing of their abilities to execute different contraceptive need of the womans.
Activity reviewed by Sexual Health and Planning to Families to Australia, now available through RACGP’s online portal of the formation gplearning in http://www.gplearning.com.au and points to generic viagra soft Categories 2 QA&CPD pertain.
“Much womans search for the contraceptive advice from general practical persons and these consultations provide the ideal possibility to support the womans and consequently perfect the results of the contraceptive use,” said Dr Chris Mitchell, President RACGP and GP in Northern NSW.
” Amount choice available to protect the womans against unplanned pregnancy grows, and this consequently critical that GPs keeps themselves in course about the current contraceptive. Particularly, it is important for GPs to understand the risk and advantage over different contraceptive methods available in Australia and guarantee that patients understand as to use their method to contraceptions it is correct.
“This activity of the formation will be useful for GPs at womans to choose contraceptive that - a right for them weighting on possible advantage and defect choice to contraceptions.
“Factors such as, age of the women(woman), passions to sexual activity, risk for sexual sent infection, household history and personal risk of health important and must be considered discussing satisfaction to contraceptions and it is necessary.
“This new module of the formation provides dialogue and practical method in contraceptive need to control be in outline practised. As available online, GPs can terminate this activity of the study everywhere anytime,” said Dr Mitchell.
New activity, which free for participant RACGP, consists of multiple questions of the choice, event concerns with and contraceptive interview to consultations.
At the end these module participant must be capable:
Value, which much questions influence upon, and are defined, feminine choice contraceptive Identifies the circumstance, which can profit use the contraceptive contents oestrogens and situations favouring progestogen-only methods Describe as contraceptive can management and premenstrual dysphoric disorder (PMDD) Compare the possible advantage and risk of the available contraceptive methods for womans on the other stage their reproductive lifes, particularly teenager, womans in their 20s, woman between pregnancy and woman, who have terminated their family to Differ premenstrual syndrome (PMS) from PMDD Certain to use the formal diary book of the sign with all woman, feelling round-robin to adapt to put it more exactly diagnosis menstrual conditions of the cycle.
This is new activity of the study is designed through educational grant from Bayer Schering Pharma.
Filed under Health Online | Comment (0)Safe Sex Campaign Out And About In Portsmouth, UK
October 10th, 2008
The Students and soccer ventilators were first to be ‘Something 4 Weekends’ NHS in Portsmouth.
The City Portsmouth, increasing the frequency of Primary Confidence of the Care executes the sexual campaign of health with event Portsmouth companies Avantii to raise privity of the safe sex and find more about town habit of the bedrooms.
The Group ‘Something 4 Weekends’ for past week Freshers Fayre. Including over 10,000 visitors during two day events, group had a chance to talk the student and report him as they could be in with chance of the victory of the interruption in New Lesnom calve visitting something4theweekend.org. The Rivals also were from crowd to see for themselves simply as tricky using condom can be if You VWVhave a drink in show-style of the showing the viagra article stage of the play. The Participants were given spectacles that to imitate the effect on your vision and co-ordination after have several too much.
” It is Important must use the condoms it is correct to protect your health, showing the play proved as drink can do that more it is difficult. The Message - limits your drink and remains management - was clear,” said Watt Carolyn, PUBLIC HEALTHS of the Manager of the Development in Portsmouth City tPCT.
The Group were also unmissable in Portsmouth’s 2-1 victory against Stoke the City in Sunday in its own turn blue the kit - decorated some disease that sex without condom installs the lover in risk, including Chlamydia, Syphilis and HIV. They gave the free condoms with information on local service and encouraging visitor to spread confidentially information on their own sexual life and knowledge about sexual health in electronic questioning the machines.
The Group the following weekend in city, delivering message ‘Something 4 Weekends’ in town central revellers in zone and pub at Friday (10) and Saturday (11) and will meet more participant of the public in Cascade, shopping centre between 16 and 18 October.
Filed under Health Online | Comment (0)Supporters Of Calif Initiative ‘Dishonest’ By Promoting Measure As ‘Just Parental Notification,’ Opinion Piece Says
September 18th, 2008
The Initiative in California November bulletin, which must require minor, looking for failures to get the parental notice is written using “labyrinth of the legal conditions, article and subsection,” Francesca Ratner, volunteer in campaigns to win the similar parental measure of the notice in 2006, write in a part of the opinion of Time Angel Los. After “wanderings” all- proposed legislation, Ratner writes that she “appeared clear notion that heap of the forms consent, enforcement and judicial appeals does not belong to under name ‘parental notice.’”
According to Ratner, the total “honest” initiatives must read, “Offer to Shorten the Failure for Podrostkovyh Girl.” She adds, which total also must speak that measure must block the десятые years from reception of the failures “for their parent”; create “undue burden on physician, with mile of the red tape and serious consequence for mistake in charting the notice, messages, etc..”; guarantee “pregnant десятые years to get through humiliation and opening;” create “pretext during taking the material of the failure to win”; and add “vague article comparatively ‘judicial relief’ and ‘enforcement, which could guarantee the most further suit.”
“Sale” initiative “as simply ‘parental notice’ careless,” Ratner writes, decisive, “That, which use such acceptance must is not allowed to rewrite Constitution”
Filed under Health Online | Comment (0)International Team Reveals First Prognosticator Of Survival In Aggressive Cancer
September 6th, 2008
The Gene suppressor tumors pRb2/p130 can provide first independent portent biomarker in events soft fabrics (STS), according to international cooperation of the researchers, including scientist in Sbarro be Founded for Cancerous Study and Molecular Medicine in College of the Science and Technologies in University of the Temple in Philadelphias, POPE(PA), Division to Human Pathology and Oncology, University Siena and the Centre of the Study Oncological Mercogliano (CROM) in Avellino, Italies.
The Study appears on the most last issue of the Clinical Cancerous Study.
The Information show that reduction in expression pRb2/p130 can mean the more high risk of the repetition and deaths from STSs. The Gene pRb2/p130, member family retinoblastoma gene, adjusts the part of cycle of the cell.
Clinicians Long(the length) has searched for the foreshadowing test for disease, which can be very eager and unpredictable, doing this it is difficult to define the most useful course to chemotherapies and/or processing the radiation the following for surgery.
The Foreshadowing pointer will help the doctor to define what patient to have a more high risk of the repetition disease and, which could benefit from more eager useful therapy.
In test, the researchers studied the sample taken with 41 patients with STS. In subset 31 events nonmetastatic cancer, they have found the direct attitude between p130 expression pRb2/and clinical result patient.
“We have found that p130 expression pRb2/was lost or was reduced and was vastly coordinated by repetition disease and poor survival is valued in subset patient with nonmetastatic tumor,” said Valeria Masciullo, M.D., Ph.D., Leaden author of the test.
” Foreshadowing test could define the natural history STSs, under also help to identify the possible purposes for new types therapy,” said Antonio Giordano, M.D., Ph.D., Director of the Institute Sbarro, Professor to Molecular Biology in College of the Science and Technologies in University of the Temple in Philadelphias, POPE(PA) and Full Professor to Pathological Anatomy and Histologies of the University Siena.
The Researchers noted that reliability pRb2/p130 as potential marker in clinical usual estimation and management patient with STS deserves to is further evaluated in long-term watching study in greater amount of the events.
Filed under Men Health | Comment (0)New Concepts In Contraception
August 30th, 2008
The most last study in double-purpose contraceptive and ne-hormonal contraception were present at the main scientific conference in Meliburne.
Laureate Professor John Aitken* from University Newcastle and Dr Eva Dimitriadis from Prince of the Institute Henry’s Medical Study addressed annual scientific conference Society for Reproductive Biology (SRB).
The Professor Aitken, world-leader in reproductive biology, will discuss need to develop the novel, safe, efficient contraceptive agents double-purpose, which unite the prevention to pregnancy with protection against sexual sent diseases (STDs). His(its) study has studied the development of the contraceptive agent that immobilises - but does not kill - a semen. The Agent also possesses microbicidal activity simultaneously reducing risk to infections with sexual sent disease such as, Chlamydia.
In competition Dr Eva Dimitriadis, the Senior Research Executive in Prince Institute Henry’s (FIE), presented the novel a method for new ne-hormonal contraceptive for womans.
Her work is built in need and public interest to increase the choice of the available feminine contraceptive methods and in development of the methods that be not entrusted on women, strong hormones each day.
Dr Eva Dimitriadis And her colleagues in Uterine Biology are Grouped in FIE identified several molecules “pregnancy, blocking”, which conducts the womb in are indicated that prevents pregnancy. Her information in mouse provide proof of the principle this alternative method to contraceptions and the most further development scheduled.
For the first time since fertile feminine womb only receptive in pregnancy within a few days each month the most further potential advantage - in that that method must only must be timed during this key period.
Filed under Health Online | Comment (0)Fighters In Liberia More Probably to Had a Mental Disturbances of Health After Opening In Sexual Violence
August 18th, 2008
According to article published in August 13 issues JAMA, fighters Liberian, which practised sexual violence during civil wars were more probably to report the higher rateses an to depression, send-traumatic disorder of the voltage (PTSD), and suicidal thoughts in contrast with man and woman not-combatants or former combatants who did not feel the sexual violence.
Kirsten Johnson, M.D., M.P.H. (The Harvard Humanitarian Initiative, Harvard University, Cambridge, Mass.) and colleagues write this, “Liberia wars with 1989 cost the group of ten of a thousands of the lifes and has left much people mentally and physically traumatized. This conflict is characterized ethnic and enormous abuses against civil population between 1989 and 1997, and back into 2003 and 2004.”
To value the value and influence bound military of the trauma, researchers studied the participant in civil war Liberian. Johnson And colleagues used the structured interview and questionnaires to examine 1,666 adult (get old 18 or more old) in material for opening in sexual violence, public operation, and mental health. The Participants took the studies in Liberia during three week periods during May 2008.
Before look specifically in that subject to sexual violence, researchers report little base statisticses for adult Liberian collected from their sample:
40% have a major depressive disorder 44% have PTSD 8% met criteria for public dysfunction 33% served time with fight with power
33.2% former respondent of the combatant were a woman
Record “As feminine so and male former combatants, which practised viagra mastercard sexual violence had a bad mental results of health than not-combatant and other former combatants who did not feel opening in sexual violence,” authors.
Around 9.2% and 7.4% not-womans of the combatant and mans, accordingly, practised opening in sexual violence in contrast with 42.3% and 32.6% former combatant of the womans and mans. Both formers combatants and that, which practised sexual violence had a higher rateses to depression, PTSD, and suicidal thoughts in contrast with not-combatant or that who has not felt the sexual violence.
Amongst females, 74% former combatant, which practised sexual violence had PTSD in contrast with 44% those, was not subject to sexual violence. Amongst male, 81% former combatant, which practised sexual violence had PTSD in contrast with 46% that who did not feel the sexual violence. Besides, male former combatants, which were subject to sexual violence reported higher rateses to depression and thought-out suicide.
Record “Like their feminine analogue, male former combatant, which practised sexual violence to have a bad mental results of health than both general population and also other former combatants,” Johnson and colleagues. “Rehabilitation programmes that not to address this specific population to risk to fail critically vulnerable group.”
The Researchers solve: “This unexpected finding reminds that standard post-conflict to rehabilitations programmed and founded program of the sort must adjust the current, programming to be taken in attention male, which have felt the sexual violence, particularly former combatant.”
Filed under Health Online | Comment (0)Teacher-Student Relationships Key To Learning Health & Sex Education
August 6th, 2008
When this comes to life-change the behaviour of the study in class of health of the secondary school, identity of the teaching the person can be even more important than program, new analysis is offered.
Good while, much high schools around country were entrusted on external expert to teach the sensitive subjects such as, human virus (HIV) prevention to infections and pregnancy. But the last analysis researcher in State University Ohio and University Kentucky found that students will hear more about such questions when is learned;learnted by their regular teacher of the class room.
The Reason: students can be more prone to hear the behaviour to change the lifes-with anyone they know and believe.
” Actual teaching the person does the difference in as students will hear. When there is good attitude, which really relieves the study and motivation. And we have found this in nearly each area, regular teachers of the class room were more efficient, they were best,” said Eric Anderman , author co- analysis and professor to educational psychology able Ohio.
The Analysis - available online and will appear on liing ahead transmission Practical persons Advancement of Health of the journal.
The Student teacher to Strong connection is bound that much positive results, including best behaviour in class room and improvement in study. Because of installed relations, regular teachers of the class room have with their student, he can be easier for teenager to talk with and learn on which already knows their as the individuals.
” Attitude between teacher and student, during adolescence particularly, very important. This was easier for to speak of personal material with anyone they knew. This was easier for them to absorb the material and become to be interested in which they spoke of with their regular teacher in class room,” Anderman said.
Nearly 700 students of the secondary school in central and north Kentucky in analysis. The Students with seeds similarly measurable high schools were given same program and was learned;learnted or their regular teacher of the class room or temporary teacher.
The Students were examined before begin course and three for four weeks after termination about their experience. The Students were inquired about relations to have a sexual and use the condom, their integer and waiting to class if they have valued material of the class, and if they have felt that their own teachers of health were credible and likeable.
In nearly each categories, regular teachers of the class room had a more positive results. The Students often expect that will are tested more often their regular teacher than temporary teacher. As a result, they possible more active to hear the material to reach the high sort in test, and to appear experienced during debate of the class room.
More it is important, students in class room called on their regular teacher valued material of the course more, than did others. The lecture hear Instead of simply on formation, students were motivated to call attention since they have felt the class offered important information.
“When you have a children, who simply remember the material for test and fortnight later not to remember any one of this, You do not become nowhere. But if You may get the to interest and hear since they think that this important that - something that will last be a whole life,” Anderman said.
The Students, which also of the sexual partner in more debate of the class room with regular teacher. These students valued to debates, reporting that debates were more high as and more frequent
“Students, which had a sexual partner were more probably to speak that was a debate of the class, continuing with regular teacher than that learned;learnted external persons. These children were more probably to be felt like was a debate of these questions, rather then exactly teacher, being read lectures to him,” he has said.
The Regular teachers of the class room were also perceived as credible than their temporary analogues. The Students felt that their regular teachers were more experienced but also loved their regular teacher more. The Students felt comfortable with these teacher and were capable around and with teacher but also send him more seriously, he has said.
In spite of positive results, the warning Anderman that not all teachers will have ditto influence as that in analysis. Each teacher in this analysis, as temporary so and constant, received professional, trained before entering the class room. Actually, not all teachers will have same preparation and know-how, and decisions must be made founded on which best suitable for each class.
“School is an absolute best way to get information a teenager, no material, which teaches. Important this is because reception of the teacher to do the relationship. If teacher can do the right by relationship with one child, You have saved one person from reception HIV, You have saved one life of the person,” he has said.
The Study was organized in University Kentucky and remain able Ohio. The Authors Co-analysis include the Band of the motion Derek and Pamela Cupp University of the Division Kentucky’s Relationship, Valerie Phebus Division Pediatrics-Neonatology in University Kentucky, and Rick Zimmerman, director of the centre for Peace Institute for Research & Merit Louisville, positions KY.
Filed under Health Online | Comment (0)Traditional radiation planning methods
July 22nd, 2008
Traditional radiation planning methods involve choosing the number, direction and arrangement of radiation beams and determining the resultant dose distribution. The plan chosen is the one that provides the best dose coverage to the target while minimizing dose to the surrounding normal tissues is chosen and this is known as forward planning. Intensity modulated radiation therapy is currently the most advanced approach for delivering highly conformal radiation therapy. This technique can achieve even more tightly conformal dose distributions through the use of nonuniform intensity radiation beams. Each beam is divided into multiple segments or beamlets Each beamlet can have different intensity thereby modulating the intensity of each beam. In contrast to the traditional method of radiation planning, IMRT works backward by choosing the desired dose distribution first and then determining the required number of beams and intensities needed to achieve this dose distribution.
This is known as inverse planning. The target volume and critical normal organs are defined and the upper and lower dose limits for the target and normal structures selected. The quality of the plan is assessed using DVHs (Figure 5). At most high volume institutions, IMRT has become the new standard of care for the treatment of men with prostate cancer using EBRT. Intensity modulated radiation therapy is a powerful technique for escalating dose and reducing toxicity. Central to achieving this goal is the recognition and adoption of strict normal tissue constraints.
Rectal side effects are manifest within 2-4 years,18 while bladder and erectile tissue side effects mature over a much longer time course.
Objective DVH criteria have clearly been associated with rectal toxicity.19, 20 The prostate (± seminal vesicles) represents the CTV. The prostate, particularly at the bladder/prostate base superiorly and the prostate apex/urogenital diaphragm inferiorly is better defined on MRI than CT (Figure 6). Also, the boundaries of the sur- rounding normal structures (bladder, rectum, penile bulb) are more easily defined on MRI. In fact, several studies have suggested that CT overestimates the prostate volume by 30-40% over MRI. Conditions for plan acceptance should include that 95-100% of the PTV receives the prescription dose. The CTV should receive 100% of the prescription dose.
The maximum dose to the PTV should not exceed the prescribed dose by more than 17% and <1% of the PTV should receive less than 65 Gy (usually <0.5%). The FCCC PTV margins are 8 mm in all dimensions, except posteriorly at the prostaterectal interface, where a 5 mm margin is planned. These margins are acceptable only when daily localization is performed. The FCCC normal tissue constraints are derived in part from the M.D. Anderson Cancer Center (MDACC) randomized trial. In that study there was a dramatic increase in ≥grade 2 rectal reactions when ≥25% of the rectal volume received ≥70 Gy. The constraints for the rectum are ≤17% and ≤35% of the rectum receives ≥65 Gy and ≥40 Gy, re- spectively. Constraints to the bladder and erectile tissues are less well-defined. However, recent data from FCCC has demonstrated the ability to limit the dose to the erectile bodies without sacrificing prostate dose homo- geneity criteria (maximum prostate dose <120% prescribed dose) and rectal tolerance criteria.
Treatment results Individual institutions defined bNED control following RT differently prior to the development of the ASTRO definition of PSA control. Comparison of treatment results was difficult if not impossible. Statistically significant differences in bNED control could be seen by merely changing the definition of bNED control when keeping all other variables stable. A conference of prostate cancer experts was held at the request of the American Society of Therapeutic Radiology and Oncology (ASTRO) in 1996 and a unified definition of bNED control was developed for reporting successes or failures following irradiation.
The definition selected by this group was designed for clinical practice as well as research trials and did not require a specific single value for post-treatment nadir PSA to determine success or failure. The ASTRO definition defined failure as 3 consecutive rises in post-treatment PSA after achieving a nadir. The date of failure (DOF) was backdated to the time midway between the post-treatment PSA nadir and the first of the consecutive rises in PSA.
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