Abstract: A method for quantitatively assessing fat of a liver is disclosed. The method comprises: obtaining measured ultrasound data comprising an ultrasound image of the liver and corresponding radio frequency (RF) data of the liver; identifying a field of interest (FOI) in the ultrasound image; determining, for each of a plurality of graphical elements that are within the FOI, values of one or more parameters of interest that are indirect measures of the fat in the liver using the RF data and a pre-defined relationship; and enabling assessment of the fat in the liver based on the determined values.

Abstract: A mechanical pencil includes a clamping claw for playing a coordination role in lead output. An abutting member is arranged in front of the clamping claw. The rear end, corresponding to the clamping claw, of the abutting member is provided with an abutting portion. The abutting portion includes a first through hole allowing a lead to move through. The abutting portion can be inserted into the clamping claw in a case where the clamping claw moves forward and simultaneously drives the clamping claw to open outwardly. The mechanical pencil has a better lead output effect.

Abstract: A mechanical pencil includes a clamping claw for playing a coordination role in lead output. An abutting member is arranged in front of the clamping claw. The rear end, corresponding to the clamping claw, of the abutting member is provided with an abutting portion. The abutting portion includes a first through hole allowing a lead to move through. The abutting portion can be inserted into the clamping claw in a case where the clamping claw moves forward and simultaneously drives the clamping claw to open outwardly. The mechanical pencil has a better lead output effect.