Subject(s)
HIV Seropositivity , Lung Neoplasms/etiology , Lymphoma, Large B-Cell, Diffuse/diagnostic imaging , HIV Seropositivity/complications , Humans , Immunocompromised Host , Lung/pathology , Lung Neoplasms/diagnostic imaging , Lymphoma, Large B-Cell, Diffuse/etiology , Lymphoma, Large B-Cell, Diffuse/pathology , Male , Middle Aged , Radiography, Thoracic , Tomography, X-Ray ComputedSubject(s)
Brain Neoplasms/diagnostic imaging , Leukemia, Myeloid, Acute/radiotherapy , Meningioma/diagnostic imaging , Neoplasms, Radiation-Induced/diagnosis , Antineoplastic Combined Chemotherapy Protocols/administration & dosage , Brain Neoplasms/drug therapy , Brain Neoplasms/etiology , Child , Child, Preschool , Combined Modality Therapy , Dose-Response Relationship, Radiation , Headache/etiology , Humans , Injections, Spinal , Leukemia, Myeloid, Acute/cerebrospinal fluid , Leukemia, Myeloid, Acute/drug therapy , Male , Mandibular Neoplasms/diagnostic imaging , Mandibular Neoplasms/radiotherapy , Meningioma/drug therapy , Meningioma/etiology , Methotrexate/administration & dosage , Neoplasms, Radiation-Induced/therapy , Tomography, X-Ray ComputedSubject(s)
Astrocytoma/diagnosis , Ataxia/etiology , Brain Neoplasms/diagnosis , Glioblastoma/diagnosis , Vision Disorders/etiology , Adolescent , Astrocytoma/complications , Astrocytoma/pathology , Brain Neoplasms/complications , Brain Neoplasms/pathology , Diagnosis, Differential , Female , Glioblastoma/complications , Glioblastoma/pathology , Humans , Magnetic Resonance Imaging , Tomography, X-Ray ComputedSubject(s)
Brachial Plexus/diagnostic imaging , Fibroma/diagnostic imaging , Head and Neck Neoplasms/diagnostic imaging , Aged , Brachial Plexus/pathology , Diagnosis, Differential , Fibroma/diagnosis , Fibroma/pathology , Head and Neck Neoplasms/diagnosis , Head and Neck Neoplasms/pathology , Humans , Male , Neoplasm Invasiveness , Tomography, X-Ray ComputedSubject(s)
Adenocarcinoma/diagnosis , Kidney Neoplasms/diagnosis , Adenocarcinoma/diagnostic imaging , Adenocarcinoma/pathology , Adolescent , Carcinoma, Renal Cell/diagnosis , Diagnosis, Differential , Female , Humans , Kidney Neoplasms/diagnostic imaging , Kidney Neoplasms/pathology , Tomography, X-Ray Computed , Ultrasonography , Wilms Tumor/diagnosisSubject(s)
Back Pain/etiology , Neoplasms, Germ Cell and Embryonal/diagnosis , Sacrum , Spinal Neoplasms/diagnosis , Adult , Diagnosis, Differential , Humans , Magnetic Resonance Imaging , Male , Neoplasms, Germ Cell and Embryonal/complications , Spinal Neoplasms/complications , Tomography, X-Ray ComputedABSTRACT
We evaluated the image quality of mammograms made by using a new dual-screen, dual-emulsion film combination (Kodak Min-R Fast screen, T-Mat Mll film) that permits reduction of radiation exposure by approximately 50% when compared with a standard single-screen, single-emulsion film system (Kodak Min-R screen, OM-1 film). This new film has been improved when compared with earlier T-Mat M film, including the introduction of an inert dye to reduce light crossover to essentially 0%. Mammogram pairs made with the dual-emulsion film combination and the standard single-emulsion film combination were obtained in 50 patients otherwise undergoing routine mammography. The image pairs were randomized and evaluated by three radiologists who used a three-point scale (better, same, or worse). Each pair was evaluated with regard to parenchymal contrast, sharpness, and latitude, as well as the number and sharpness of calcifications (n = 19) and sharpness of masses (n = 12) when present. All three observers found the dual-emulsion film combination to be better than or the same as the standard with regard to parenchymal sharpness (94-100%), the number and sharpness of calcifications (98-100%), and sharpness of masses (100%). Two observers found the dual-emulsion film combination to be significantly worse (p less than .05) than the standard with respect to parenchymal contrast (72%, 86%), and all three observers rated it significantly worse for film latitude (14 to 42%). Our results suggest that this new dual-emulsion film combination that allows mammography to be performed with less radiation exposure can be used without loss of image quality.
