44 results about "Nomogram" patented technology

A method for optimizing a prescription for laser-ablation corneal treatment includes receiving a measured correction prescription for a current patient. Next a database of treatment outcomes on a plurality of previously treated patients is accessed. The database contains a desired correction, and an actual correction. A difference between the desired correction and the actual correction represents an over- or undercorrection resulting from surgery. From the difference data is calculated a distribution of data points as a function of correction level. From the data-point distribution is calculated a statistically based offset applicable to the correction prescription for matching actual corrections with desired corrections. From the data-point distribution is calculated a confidence interval of the data using a predetermined confidence level. The statistically based offset is then adjusted based upon the confidence interval to provide an optimized prescription. The adjusted offset is then output for use in performing a refractive procedure.

The invention discloses a clinical cerebral infarction patient recurrence risk early warning scoring visual model system. The system comprises an input module, an analysis module and a result output module. The invention also discloses an evaluation method of the clinical cerebral infarction patient recurrence risk early warning scoring visual model system. A clinical cerebral infarction patient recurrence risk evaluation nomogram is concise, popular and easy to understand and convenient for clinicians and patients to operate, and a current cerebral infarction recurrence risk of the patients is predicted. And meanwhile, high-risk, medium-risk and low-risk groups can be clearly distinguished according to patient risk scores calculated by a risk scoring formula in the model so that the clinicians are assisted to formulate an efficient treatment scheme. In the invention, a doctor and the patient are guided to evaluate early warning scores of the clinical cerebral infarction patient recurrence risk in combination with a statistical method, and patient data acquisition is verified through a corresponding mathematical statistical method so that the doctor and the patient can quickly grasp the clinical cerebral infarction patient recurrence risk and provide early warning information.

A system for deploying and selectively inflating a thoracic aortic balloon at a desired location within the thoracic aorta for resuscitative aortic occlusion, inferior to the left subclavian artery, without the aid of fluoroscopy is described. Using CT imaging data, a distance between readily identifiable and consistently located external landmarks of torso extent is measured. Next, using the same data, a second distance from the femoral artery to a desired aortic occlusion location inferior to the left subclavian artery is determined. A correlation between the external measure of torso extent and the desired intra-arterial (i.e. endovascular) distance within the torso is made. Using a nomogram, a calibrated endovascular resuscitative thoracic aortic occlusion system can be positioned to this desired location on any injured individual with end-stage shock and impending cardiovascular collapse or death without the aid of fluoroscopy for delivery or balloon inflation.

An apparatus which can obtain a maximum oxygen intake without being restjrained by any large-scaled apparatus and accompanied by a complicated word, and present upper and lower limit values of pulse rate corresponding to a reasonable amount of motion, and which realizes transfer of information such as a pulse wave signal to and from an information processing device for processing of pulse wave information in a wireless manner through optical communication. The apparatus comprises a pulse wave detecting unit for detecting a pulse wave pattern of a subject, an FFT processing unit for finding a heart rate of the subject from the pulse wave pattern, a body motion detecting unit for detecting a body motion in the event of the subject performing running motion, an FFT processing unit for finding a pitch in the running motion of the subject from the body motion, a motion intensity calculating unit for finding intensity of motion in the running motion from the pitch, stride and a body weight of the subject, and a nomogram memory unit for storing a relationship indicated by an Astrand-Ryhming nomogram to find a maximum oxygen intake from the heart rate and intensity of motion, the maximum oxygen intake found being divided by the body weight of the subject for calculation of a maximum oxygen intake per unit body weight. Subsequently, an upper limit value (UL) and a lower limit value (LL) of pulse rate are found by finding a pulse rate corresponding to the maximum oxygen intake and sexuality, and multiplying the pulse rate by a coefficient for the upper limit value and a coefficient for the lower limit value.

A system and method are provided for simulating a Laser Induced Optical Breakdown (LIOB) protocol to establish a surgical LIOB treatment for a patient. In the system, a library of finite element models characterizing various visual defects in corneas are programmed into a computer. Further, a library of nomograms indicating specific LIOB protocols for correcting respective visual defects are programmed into the computer. As a result, a model and a corresponding nomogram may be selected in view of a patient's diagnostic information. Further, the selected model may be individualized with the diagnostic information to more precisely characterize the patient's visual defects. Thereafter, the computer simulates the indicated LIOB protocol on the individualized model in order to achieve a desired corneal configuration. When the desired corneal configuration is achieved, the final treatment plan may be determined.

An assay for diagnosing or prognosticating prostate cancer incorporates the detection of hypermethylation of GSTP, APC, and RARss2 genes and may be incorporated into a nomogram.

A method for optimizing a prescription for laser-ablation corneal treatment includes receiving a measured correction prescription for a current patient. Next a database of treatment outcomes on a plurality of previously treated patients is accessed. The database contains a desired correction, and an actual correction. A difference between the desired correction and the actual correction represents an over- or undercorrection resulting from surgery. From the difference data is calculated a distribution of data points as a function of correction level. From the data-point distribution is calculated a statistically based offset applicable to the correction prescription for matching actual corrections with desired corrections. From the data-point distribution is calculated a confidence interval of the data using a predetermined confidence level. The statistically based offset is then adjusted based upon the confidence interval to provide an optimized prescription. The adjusted offset is then output for use in performing a refractive procedure.

The invention relates to the technical field of safety assessment of pressure vessels with defects, in particular to a method for determining defects of a multilayer binding vessel by acoustic emission. Acoustic emission detection is carried out according to the structural features of the vessel so as to determine the defects. The method comprises the following steps of: (1) activating defects under overpressure, synchronously monitoring the defects in the vessel by acoustic emission, determining the overpressure during activating the defects and positioning the activated defect parts; (2) simplifying activated defects which cannot be determined by ultrasonic phased array rechecking according to the development direction of an acoustic emission event; (3) obtaining the stress distributionof the simplified defect parts by utilizing finite element calculation or a nomogram obtained on the basis of the finite element calculation so as to ensure that the simplified defects are on a maximum stress wall surface vertical to the simplified defects; and (4) based on defect simplification conditions, the stress of the simplified defect parts and material fracture toughness, reversely reasoning nominal initial sizes and tolerance sizes of the defects according to a fracture mechanics theory. The method has reliable detection means and reasonable simplification process and provides a foundation for the safety assessment of multilayer binding vessels.

The invention discloses a multivariate dynamic nomogram prediction model and its application. Visual analysis based on computer programming techniques, bioinformatics and predictor scoring parameters. The dynamic prediction model established by the present invention can be used to analyze blood clots after aneurysmal subarachnoid hemorrhage, electronic computed tomography Hounsfield unit density value and scoring parameters of serum markers, and present it in the form of a web page nomogram, which It is helpful for clinicians to perform early and rapid prediction of patients with delayed cerebral ischemia after aneurysmal subarachnoid hemorrhage, and make clinical decisions based on the obtained results.