Three-port perineal sparing technique
| Autor: | B.J. Larson, Ruby F. Meredith, W G Plott, Robert Y. Kim, Judy Smith, Ivan A. Brezovich, Burkhard Weppelmann, S.-J. Soong, Sharon A. Spencer, Prem N. Pareek |
|---|---|
| Rok vydání: | 1991 |
| Předmět: |
Adult
Male medicine.medical_specialty medicine.medical_treatment Rectum Adenocarcinoma Groin Perineum medicine.disease_cause Radiation Protection medicine Carcinoma Humans Radiology Nuclear Medicine and imaging Pelvis Aged Pelvic Neoplasms Retrospective Studies Skin Aged 80 and over Epithelioma Rectal Neoplasms business.industry Radiotherapy Dosage Equipment Design Middle Aged Vulvar cancer medicine.disease Surgery Radiation therapy medicine.anatomical_structure Lead Female Lymph Nodes Irritation business |
| Zdroj: | Radiology. 180:563-566 |
| ISSN: | 1527-1315 0033-8419 |
| DOI: | 10.1148/radiology.180.2.2068328 |
| Popis: | The records were reviewed of 103 patients with low-lying pelvic malignancies irradiated with a skin-sparing technique involving use of a pair of anteroposterior-posteroanterior opposed ports and a direct perineal port. Patients had rectal, anal, cervical, vaginal, urethral, or vulvar cancer. Use of a special lead compensator allowed the three beams to be applied perpendicularly to the surface, while delivery of a homogeneous dose to the pelvis and perineum was maintained. Skin dose with this method was greatly reduced compared with that delivered with simple opposing or four-port techniques, in which irradiation is tangential to the surface at the perineum. Acute perineal skin irritation was assigned a grade between 0 and 3, with grade 0 representing the least amount of irritation. All patients were in the grade 0 or grade 1 category. Patients treated for low-lying rectal carcinoma showed no increase in perineal recurrences when compared with historic control subjects. Use of this approach allowed delivery of adequate doses to the pelvis and perineum and a definite decrease in local toxic effects, and local control was not compromised. |
| Databáze: | OpenAIRE |
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