• Quantification of organ motion during chemoradiotherapy of rectal cancer using cone-beam computed tomography.

      Chong, Irene; Hawkins, Maria; Hansen, Vibeke; Thomas, Karen; McNair, Helen; O'Neill, Brian; Aitken, Alexandra; Tait, Diana; Royal Marsden National Health Service Foundation Trust, Sutton, Surrey, United Kingdom. (Elsevier, 2011-11-15)
      There has been no previously published data related to the quantification of rectal motion using cone-beam computed tomography (CBCT) during standard conformal long-course chemoradiotherapy. The purpose of the present study was to quantify the interfractional changes in rectal movement and dimensions and rectal and bladder volume using CBCT and to quantify the bony anatomy displacements to calculate the margins required to account for systematic (Σ) and random (σ) setup errors.
    • A Randomized Trial (Irish Clinical Oncology Research Group 97-01) Comparing Short Versus Protracted Neoadjuvant Hormonal Therapy Before Radiotherapy for Localized Prostate Cancer.

      Armstrong, John G; Gillham, Charles M; Dunne, Mary T; Fitzpatrick, David A; Finn, Marie A; Cannon, Mairín E; Taylor, Judy C; O'Shea, Carmel M; Buckney, Steven J; Thirion, Pierre G; et al. (Elsevier, 2010-08-24)
      PURPOSE: To examine the long-term outcomes of a randomized trial comparing short (4 months; Arm 1) and long (8 months; Arm 2) neoadjuvant hormonal therapy before radiotherapy for localized prostate cancer. METHODS AND MATERIALS: Between 1997 and 2001, 276 patients were enrolled and the data from 261 were analyzed. The stratification risk factors were prostate-specific antigen level >20 ng/mL, Gleason score >/=7, and Stage T3 or more. The intermediate-risk stratum had one factor and the high-risk stratum had two or more. Staging was done from the bone scan and computed tomography findings. The primary endpoint was biochemical failure-free survival. RESULTS: The median follow-up was 102 months. The overall survival, biochemical failure-free survival. and prostate cancer-specific survival did not differ significantly between the two treatment arms, overall or at 5 years. The cumulative probability of overall survival at 5 years was 90% (range, 87-92%) in Arm 1 and 83% (range, 80-86%) in Arm 2. The biochemical failure-free survival rate at 5 years was 66% (range, 62-71%) in Arm 1 and 63% (range, 58-67%) in Arm 2. CONCLUSION: No statistically significant difference was found in biochemical failure-free survival between 4 months and 8 months of neoadjuvant hormonal therapy before radiotherapy for localized prostate cancer.
    • A randomized trial comparing bladder volume consistency during fractionated prostate radiation therapy

      Mullaney, L.; O'Shea, E.; Dunne, M.; Finn, M.; Thirion, P.; Cleary, L. A.; McGarry, M.; O'Neill, L.; Armstrong, J.G. (2014-01-10)
      Organ motion is a contributory factor to the variation in location of the prostate and organs at risk during a course of fractionated prostate radiation therapy (RT). A prospective randomized controlled trial was designed with the primary endpoint to provide evidence-based bladder-filling instructions to achieve a consistent bladder volume (BV) and thus reduce the bladder-related organ motion. The secondary endpoints were to assess the incidence of acute and late genitourinary (GU) and gastrointestinal (GI) toxicity for patients and patients’ satisfaction with the bladder-filling instructions.
    • Rectal preparation for prostate RT patients: a solution to address rectal volume variation. [ICORG 05-04]

      Mullaney, L.; O'Shea, E.; Coffey, M.; Thirion, P.; St. Luke's Radiation Oncology Network (2009-09)
      Oral presentation - Annual Scientific Meeting, Faculty of Radiologists, RCSI, Sept. 2009.
    • Review of surface dose detectors in radiotherapy

      O'Shea, E.; McCavana, P. (2006-11-20)
      Several instruments have been used to measure absorbed radiation dose under non-electronic equilibrium conditions, such as in the build-up region or near the interface between two different media, including the surface. Many of these detectors are discussed in this paper. A common method of measuring the absorbed dose distribution and electron contamination in the build-up region of high-energy beams for radiation therapy is by means of parallel-plate ionisation chambers. Thermoluminescent dosimeters (TLDs), diodes and radiographic film have also been used to obtain surface dose measurements. The diamond detector was used recently by the author in an investigation on the effects of beam-modifying devices on skin dose and it is also described in this report
    • The Role of Proteomics in Biomarker Development for Improved Patient Diagnosis and Clinical Decision Making in Prostate Cancer.

      Tonry, Claire L; Leacy, Emma; Raso, Cinzia; Finn, Stephen P; Armstrong, John; Pennington, Stephen R (2016-07-18)
      Prostate Cancer (PCa) is the second most commonly diagnosed cancer in men worldwide. Although increased expression of prostate-specific antigen (PSA) is an effective indicator for the recurrence of PCa, its intended use as a screening marker for PCa is of considerable controversy. Recent research efforts in the field of PCa biomarkers have focused on the identification of tissue and fluid-based biomarkers that would be better able to stratify those individuals diagnosed with PCa who (i) might best receive no treatment (active surveillance of the disease); (ii) would benefit from existing treatments; or (iii) those who are likely to succumb to disease recurrence and/or have aggressive disease. The growing demand for better prostate cancer biomarkers has coincided with the development of improved discovery and evaluation technologies for multiplexed measurement of proteins in bio-fluids and tissues. This review aims to (i) provide an overview of these technologies as well as describe some of the candidate PCa protein biomarkers that have been discovered using them; (ii) address some of the general limitations in the clinical evaluation and validation of protein biomarkers; and (iii) make recommendations for strategies that could be adopted to improve the successful development of protein biomarkers to deliver improvements in personalized PCa patient decision making.
    • Sensitivity of volumetric modulated arc therapy patient specific QA results to multileaf collimator errors and correlation to dose volume histogram based metrics.

      Coleman, Linda; Skourou, Christina; University Hospital Galway, Newcastle Road, Galway, Ireland. (2013-11)
      This study investigates the impact of systematic multileaf collimator (MLC) positional errors on gamma analysis results used for quality assurance (QA) of Rapidarc treatments. In addition, this study evaluates the relationship of these gamma analysis results and clinical dose volume histogram metrics (DVH) for Rapidarc treatment plans.
    • Small-cell carcinoma of the cervix at 23 weeks gestation.

      Smyth, Elizabeth C; Korpanty, Grzegorz; McCaffrey, John A; Mulligan, Niall; Carney, Desmond N (2010-06-20)
    • Stereotactic Radiosurgery (SRS) / Stereotactic body radiotherapy (SBRT): Benefit to Irish patients and Irish Healthcare Economy

      Cagney, DN; Armstrong, JG (Irish Medical Journal, 2017-01)
      Cancer incidence across Europe is projected to rise rapidly over the next decade. This rising cancer incidence is mirrored by increasing use of and indications for stereotactic radiation. This paper seeks to summarize the exponential increase in indications for stereotactic radiotherapy as well as the evolving economic advantages of stereotactic radiosurgery and stereotactic body radiotherapy
    • Temporal patterns of bowel and bladder toxicity in a randomised controlled trial assessing duration of neo-adjuvant hormones prostate cancer.[ICORG 97-01]

      Barry, A.; Lyons, C.; Dunne, M.; Thirion, P.; Armstrong, J.; St. Luke's Radiation Oncology Network (2011-10)
      Poster presentation - ASTRO annual meeting, Florida, October, 2011.
    • Toxicity of cetuximab versus cisplatin concurrent with radiotherapy in locally advanced head and neck squamous cell cancer (LAHNSCC).

      Walsh, Lorraine; Gillham, Charles; Dunne, Mary; Fraser, Ian; Hollywood, Donal; Armstrong, John; Thirion, Pierre; Department of Radiation Oncology, St. Luke's Hospital, Dublin, Ireland. (Elsevier, 2011-01)
      We retrospectively reviewed acute toxicity with cetuximab and radiotherapy, comparing it with a matched cisplatin group. The cetuximab group experienced significantly more toxicity--grade ≥3 oral mucositis (p=0.014), skin dermatitis (p=0.0004), ≥10% weight loss (p=0.03), and enteral feeding requirement (p=0.05). This finding of enhanced toxicity is similar to recent publications.
    • Transdermal hyoscine induced unilateral mydriasis.

      Hannon, Breffni; Jennings, Valerie; Twomey, Marie; O'Reilly, Maeve; Palliative Medicine Department, Our Lady's Children's Hospital, Dublin, Ireland. breffnilhannon@yahoo.co.uk (2012-03-20)
      The authors present a case of unilateral mydriasis in a teenager prescribed transdermal hyoscine hydrobromide (scopolamine) for chemotherapy induced nausea and vomiting. The authors discuss the ocular side-effects associated with this particular drug and delivery system and the potential use of transdermal hyoscine as an antiemetic agent in this group.
    • An unusual case of dyspnea in metastatic breast carcinoma.

      Cronin, Kathleen Ann; Twomey, Marie; O'Reilly, Maeve; Carney, Desmond N (Elsevier, 2011-02)
    • An Unusual Case of Marginal Zone B-Cell Lymphoma Arising in the Breast - Its Diagnosis and the Role of Radiotherapy in its Management.

      Rock, Kathy; Rangaswamy, Guhan; O'Sullivan, Siobhra; Coffey, Jerome; Department of Radiation Oncology, St. Luke's Hospital, Rathgar, Dublin 6, Ireland. (Karger, 2011-10)
      BACKGROUND: Primary lymphoma of the breast accounts for 0.04-0.5% of all breast malignancies and approximately 1% of all extranodal lymphomas. For stage IE node-negative disease, involved field radiotherapy is recommended except for very young women in whom the risk of breast cancer is a concern. The rate of complete response for limited stage extranodal marginal B-cell lymphoma is in excess of 90%. CASE REPORT: We report the case of a 62-year-old lady who presented with a unilateral painless palpable right breast lump. She subsequently underwent a trucut biopsy of the lesion. The histology revealed a low-grade B-cell non-Hodgkin's lymphoma (NHL). Immunohistochemistry showed that more than 95% of the cells were B cells which were CD 20+/CD 45+ and BC L6+. This confirmed the diagnosis of marginal zone lymphoma. Staging work-up was negative for distant metastases. Serum alkaline phosphatase and lactate dehydrogenase were normal. The patient had no 'B' symptoms. Her final diagnosis was clinical stage IAE NHL, and she was referred for curative radiotherapy. CONCLUSION: Radiation treatment is a safe and extremely effective modality of treatment for early stage I marginal zone B-cell lymphomas of the breast.
    • An Unusual Case of Marginal Zone B-Cell Lymphoma Arising in the Breast – Its Diagnosis and the Role of Radiotherapy in its Management

      Rock, Kathy; Rangaswamy, G; O'Sullivan, S.; Coffey, J.; Department of Radiation Oncology, St. Luke’s Hospital, Rathgar, Dublin 6, Ireland (Karger, 2011)
    • The use of complementary and alternative medicine by Irish pediatric cancer patients.

      O'Connor, Niamh; Graham, Donna; O'Meara, Anne; Devins, Mary; Jennings, Valerie; O'Leary, Denise; O'Reilly, Maeve; The Departments of Palliative Medicine and Oncology, Our Lady's Children's Hospital, Crumlin, Dublin, Ireland. (2013-10)
      The use of complementary and alternative medicine (CAM) in the Irish pediatric cancer setting has not previously been established.