ABSTRACT
Radiation studies, including computed tomography (CT) and magnetic resonance imaging (MRI), revealed that these techniques can accurately determine the site of a tumor, the borders of its spread to the adjacent anatomic structures. They also revealed the features of CT in detecting osseous structural destruction and the advantage of MRI in visualizing the soft tissue component of a neoplasm and in distinguishing the degree of contrast of tumor tissue and concurrent secondary inflammation. The accuracy of CT and MRI for small tumors is 45-80 and 29% higher than that of X-ray study and traditional tomography, respectively. The potentialities of all radiation diagnostic techniques for over 3.0-cm tumors are equal.
Subject(s)
Magnetic Resonance Imaging , Maxillary Neoplasms/diagnosis , Nose Neoplasms/diagnosis , Paranasal Sinus Neoplasms/diagnosis , Tomography, X-Ray Computed , Adult , Diagnosis, Differential , Female , Humans , Male , Middle Aged , Nasal Cavity/diagnostic imaging , Nasal Cavity/pathology , Reproducibility of Results , Retrospective StudiesABSTRACT
Experience has pointed to a rather low potential of traditional procedures of roentgenography and tomography in detecting small foci (ca. 4-5 cm in dia.). Metastases are often not seen in the shadow of the ribs, diaphragm and cardio-vascular complex. X-ray computed tomography (CT) is a method of choice for early diagnosis and further tracking tumor process in the lung. Superior spatial resolution offers complete summation-free visualization of the lung parenchyma. Provision of more data, including information on "occult" pathology in the lung, is instrumental in confirming or rejecting diagnosis of solitary tumor.
Subject(s)
Lung Neoplasms/diagnostic imaging , Lung Neoplasms/secondary , Neoplasms/pathology , Tomography, X-Ray Computed , Adult , Aged , Diagnosis, Differential , Female , Humans , Male , Middle Aged , Neoplasm Staging , Sensitivity and SpecificityABSTRACT
Application of computed (CT) and magnetic resonance tomography (MRT) provided means of precise sitting of tumor and identifying boundaries of adjacent tissue involvement. The study established certain characteristics of CT detection of bone damage. It also showed MRT superiority in visualizing the soft-tissue component of neoplasm and distinguishing between tumor tissue and concomitant secondary inflammation.
Subject(s)
Magnetic Resonance Imaging , Maxillary Neoplasms/diagnostic imaging , Mouth Mucosa/diagnostic imaging , Mouth Neoplasms/diagnostic imaging , Paranasal Sinus Neoplasms/diagnostic imaging , Tomography, X-Ray Computed , Adult , Diagnosis, Differential , Female , Humans , Inflammation , Male , Maxillary Neoplasms/pathology , Middle Aged , Mouth Mucosa/pathology , Mouth Neoplasms/pathology , Neoplasm Staging , Paranasal Sinus Neoplasms/pathologyABSTRACT
Analyzing about 1000 cases of metastatic lesion of the lung indicated that the incidence of metastases was 12.9% (117 patients). Computed tomography (CT) enhances the informative value of X-ray studies in solitary metastases. CT detects tumor nodes invisible on routine X-ray films due to their small sizes (up to 1.0 cm) or location in the areas undetectable by other studies (behind the first rib, clavicle, in the posterior phrenicocostal sinus, behind the heart shadow). The sensitivity and accuracy of CT as to small solitary metastatic lymphs in the lung were 97.4 and 89.4%, respectively, which were higher than those of X-ray study (60.0 and 55.3%) and longitudinal tomography (80.0 and 68.0%) at a virtually equal specificity in the three types of studies. The high diagnostic value of a complex radiation study, including CT, and its simplicity make it possible to identify solitary metastatic formations, which is of great importance in choosing adequate but less aggressive treatment.
