ABSTRACT
Traditionally,conventional imaging modalities used to assess neoplasms for neoadjuvant chemotherapy responses have their own limitations.Functional imaging can predict neoadjuvant chemotherapeutic responses early and thus guide personalized therapies.However,there is no standard method of imaging assessment for neoadjuvant chemotherapy follow-up.The aim of this arti-cle is to discuss the accuracy,advantages,limitations,and future directions of various imaging methods,especially functional imaging, for evaluating the response to chemotherapy in patients with breast neoadjuvant chemotherapy.
ABSTRACT
Objective To evaluate ultrasound combined with thri-operators and the blood-oxygen functional image (TOBOFI) technology in diagnosis of breast cancer in young women. Methods 221 breast tumor patients under 45 years old were selected to analyze their TOBOFI and ultrasonographic characteristics respectively. Based on pathological result, the two diagnostic methods were compared to determine the accurate rate. Results Of all the 221 patients, 82 (37.1%) were malignant and 139 benign. The sensitivity of TOBOFI and ultrasonography was 90.24% and 83.57% respectively, while the accurate rate of the two was 89.14% and 84 62% respectively. Accurate rate was improved to 93.90 % (77/82) if the two were combined. Conclusion TOBOFI has unique clinical value in diagnosing breast cancer in young women, especially in combination with ultrasound.
ABSTRACT
Objective To evaluate thri-operators and the blood-oxygen functional image technology in di-agnosing breast cancer. Methods One hundred and forty-six patients were admitted to hospital for operation due to one hundred and fifty-three suspicious lesions detected in their breasts. These lesions were detected by physical examination, thri-operators and the blood-oxygen functional image, mammography uhrasonography. The sensitivity and specificity of each diagnostic method were obtained and the radiolagie-pathologic correlation was meanwhile calculated. Results Sixty one(41.8%)breast lesions were diagnosed as malignancy. The sensitivity, specificity, accuracy,positive prognostic value and negative prognostic value of ultras onography were 80. 33% ,89. 41%,85.61% ,84.48% and 86.36%. Such data of mammography were 57.89% ,80. 36% ,69.03% ,75.00% and 65. 22%. And those of thri-operators and the blood-oxygen functional image technology were 91.80% ,83.53%, 86.99% ,80.00% and 94.67%. Conclusions Thri-operators and the blood-oxygen functional image technology is superior to uhrasonography and mammography in diagnosing breast lesions with its sensitivity accuracy and neg-ative prognostic value, while specificity and positive prognostic value were between them, have greater value in screeninging and the diagnosing breast cancer.
ABSTRACT
Functional MRI (fMRI) provides an indirect mapping of cerebral activity, based on the detection of the local blood flow and oxygenation changes following neuronal activity (Blood Oxygenation Level Dependent). fMRI allows us to study noninvasively the normal and pathological aspects of functional cortical organization. Each fMRI study compares two different states of activity. Echo-Planar Imaging is the technique that makes it possible to study the whole brain at a rapid pace. Activation maps are calculated from a statistical analysis of the local signal changes. fMRI is now becoming an essential tool in the neurofunctional evaluation of normal volunteers and many neurological patients as well as the reference method to image normal or pathologic functional brain organization.