Abstract
Objective To study the qualitative value of multislice spiral CT (MSCT) dynamic enhancement scanning for solitary nodules (SPN) of the chest. Methods In this paper, 40 cases of chest nodules (including 25 cases of malignant nodules, 8 cases of inflammatory nodules, and 7 cases of benign nodules) were first scanned to determine the scope of nodules. At the two rates of 5 ml/s and 3 ml/s, CT dynamic enhancement scans were performed at the center of the nodule, and the CT values, peak enhancement (PH) and peak time (PT) before and after SPN enhancement, were recorded. It is mainly strengthened, with 80% (20/25) of net added value between 20 and 60 Hu, and 20% (5/25) >60 Hu or <20 Hu. The enhancement peak and peak time are (31.31 ± 10.62) Hu and 45 s, respectively. The time-density curve (T-DC) showed a slowly rising type; the inflammatory nodules were mainly severely strengthened, with a net increase of >40 Hu. The enhancement peak value is (49.25 ± 12.44) Hu, and the peak time is 80 s and 140 s. There is a characteristic of rising and falling and then rising in the curve. Conclusion Multislice spiral CT dynamic enhancement scan reflects the dynamic characteristics of chest nodular blood flow, which can be used to noninvasively evaluate and diagnose SPN.
Highlights
Solitary nodules (SPN) in the lungs are round or irregular shaped lesions with a maximum diameter of no more than 3 cm and are not accompanied by atelectasis, satellite lesions, and local lymphadenopathy. e disease has been reported all over the world. e incidence is insidious and has a certain degree of self-healing, so the incidence rate statistics are relatively difficult, but at present, the incidence rate of females worldwide is slightly higher than that of males
Solitary nodules of the chest can be caused by different diseases, and the morphology of different diseases has superimposed performance, which makes a lot of confusion in clinical diagnosis
Case Information. e data of 40 patients with chest nodules who were first diagnosed in our hospital from September 2004 to February 2007 were collected by multislice spiral CT (MSCT) dynamic enhancement scan data
Summary
Solitary nodules (SPN) in the lungs are round or irregular shaped lesions with a maximum diameter of no more than 3 cm and are not accompanied by atelectasis, satellite lesions, and local lymphadenopathy. e disease has been reported all over the world. e incidence is insidious and has a certain degree of self-healing, so the incidence rate statistics are relatively difficult, but at present, the incidence rate of females worldwide is slightly higher than that of males. Solitary nodules (SPN) in the lungs are round or irregular shaped lesions with a maximum diameter of no more than 3 cm and are not accompanied by atelectasis, satellite lesions, and local lymphadenopathy. With the development of imaging technology, especially the improvement of CT resolution, the detection rate of SPN is getting higher and higher, but the identification of benign and malignant is always difficult. Due to the characteristics of high contrast and low X-ray absorption rate of lung tissue, low-dose CT scan of the chest can diagnose lung diseases. E detection, differential diagnosis, and follow-up of lung nodules are one of the important subjects of chest imaging diagnosis. The domestic and foreign research on the application of low-dose CT in the chest mainly focuses on the sensitivity assessment of lung nodule detection, and it rarely involves study on the morphological characteristics of nodules
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