Biomedical subjects

B D Kruse

Publications and source records attributed to B D Kruse.

5 recordsLinked to original sources

PubMed1996

Optimization of radiation dose and image quality in mammography: a clinical evaluation of rhodium versus molybdenum.

Mammography was done with a conventional molybdenum anode/filter combination and either a molybdenum/rhodium (Mo/Rh) or rhodium/rhodium (Rh/Rh) combination to compare the contrast characteristics and penetrating ability of the different techniques. Each pair was rated as being equal, one slightly better than the other, or one much better than the other. The "preferred" image was also selected. The entrance surface exposure and the mean glandular dose were determined for each exposure. Mo/Mo was compared with Mo/Rh in 26 patients and to Rh/Rh in 23. Mo/Mo was judged to produce better or equal contrast and penetration in all cases except one using the Mo/Rh combination. Mo/Rh was the preferred image only once and Rh/Rh not at all. In comparison to the conventional Mo/Mo technique, the average dose was reduced by approximately 25% with Mo/Rh and by 50% with Rh/Rh.

Electrodes↗

PubMed1993

Imaging of breast cancer after augmentation mammoplasty.

Experience with mammography in patients with augmentation mammoplasty has been limited by the younger age of the patients and the bias of the physicians that mammography may be ineffective in imaging the breast with a prosthesis. With recent advances in imaging of the augmented breast and the increase in popularity of augmentation mammoplasty, more of these patients are undergoing mammography. We reviewed the mammograms and clinical history of 25 women with breast implants and breast cancer. Seven (28%) of the 25 women were asymptomatic and referred for screening mammography. Mammography or sonography was positive in 22 (88%) of the 25 women. There was no nodal involvement in 11 of 18 patients with infiltrating duct carcinoma, 5 women with intraductal carcinoma, and 2 women with lobular carcinoma in situ. In this study, women with implants who developed breast cancer presented with nodal metastases in only 28% of cases. Modified position views should be performed in all patients, and sonography may be helpful in evaluating palpable masses even when mammography is normal. Breast cancer can be detected in the augmented breast by mammography even if clinically occult.

Adult↗

PubMed1992

Breast imaging and the augmented breast.

Women with augmented breast implants are presenting for mammograms in greater numbers over the past year due to recent publicity regarding the safety of silicone gel-filled implants. New issues are being raised in light of this recent increase, making it essential for patients and health care providers to understand the limitations of mammography and how to best minimize problems.

Adult↗

PubMed1992

Intraductal extension of silicone from a ruptured breast implant.

Silicone rupture is a known complication of closed capsulotomy. Imaging of silicone within breast tissue after rupture of an implant is not uncommon. Intraductal extension of silicone on mammography is a very rare finding. This case report described the imaging features of silicone within the breast tissue and ducts that necessitated subcutaneous mastectomy for definitive treatment.

Adult↗

PubMedDate not supplied

MR imaging of silicone gel-filled breast implants in vivo with a method that visualizes silicone selectively.

The lack of an adequately sensitive method for detecting silicone leakage and reported serious complications due to silicone leakage were cited as justification by the U.S. Food and Drug Administration for imposing the current restrictions on silicone gel-filled breast prostheses. The authors report a new magnetic resonance imaging method for visualizing silicone leakage: the silicone-only sequence (SOS). The method uses the conventional STIR (short-inversion-time inversion-recovery) technique combined with a 1331 radio-frequency pulse train widely used for water suppression in spectroscopy. With the SOS, silicone can be imaged while signals from fat and water are suppressed. The authors used the SOS to image phantoms and normal and ruptured silicone gel-filled breast prostheses.

Breast↗